I found this link to modify an Ubuntu install CD. https://help.ubuntu.com/community/InstallCDCustomization
However, I want to put the Adaptec aic94xx RAID driver onto the disk so that my RAID controller is recognised and I can set up a mirror.
How do I go about doing this? Firmware file is: http://kernel.org/pub/linux/kernel/people/jejb/aic94xx-seq.fw
EDIT: decided to use a different RAID card. The inbuilt one is too problematic to get going under Linux. The 3Ware one just worked straight away no dramas.